William Saroyan wrote a great play on this theme, that...

William Saroyan wrote a great play on this theme, that purity of heart is the one success worth having. "In the time of your life--live!" That time is short and it doesn't return again. It is slipping away while I write this and while you read it, and the monosyllable of the clock is Loss, loss, loss, unless you devote your heart to its opposition.